T5 : null display SELECT component ?

[Penyihir Kecil <pe...@gmail.com>]

i tried select component but i have difficulty and got stuck on it.
i had already read the archive milis, but still have no idea what had
happened with mine
here's my code....

i always get null value(no data) to diplay in my select component.
when i debug it,

getPositionList() in Home.java always return a list of value.
but it doesn't work when i try to call the model : return new
PositionSelectionModel(getPositionList());

does anyone can help clear me up....

thnx...
*
-----------------------------------------------------------------------------------------------------
Home.tml*
<select t:type="select" t:id="position" value="position"
model="positionSelectionModel" encoder="valueEncoder"/>

-------------------------------------------------------------------------------------------------
*Home.java
.....

*private PositionSelectionModel positionSelectionModel;
    public PositionSelectionModel getPositionSelectionModel() {
        setPositionList(getPositionDao().queryForList("", ""));
        return new PositionSelectionModel(getPositionList());
    }
    public ValueEncoder<Position> getValueEncoder(){
        return new PositionValueEncoder(getPositionList());
    }

......
------------------------------------------------------------------------------------------------------
*PositionSelectionModel .java*

public class PositionSelectionModel implements SelectModel {
    private List<Position> positionList;

    public PositionSelectionModel(List<Position> positionList){
        this.positionList = positionList;
    }

    public List<OptionGroupModel> getOptionGroups() {
        return null;
    }

    public List<OptionModel> getOptions() {
        List<OptionModel> optionModelList = new ArrayList<OptionModel>();

        for(Position position: positionList) {
            System.out.println(position.getPosition());
            optionModelList.add(new OptionModelImpl(position.getPosition(),
false, position,new String[0]));
        }

        return optionModelList;
    }

    public void visit(SelectModelVisitor arg0) {

    }

}
------------------------------------------------------------------------------------------------------------------------------
*PositionValueEncoder.java*

public class PositionValueEncoder implements ValueEncoder<Position> {
    private List<Position> positionList;

    public PositionValueEncoder(List positionList) {
        this.positionList = positionList;
    }
    public String toClient(Position position) {
        return position.getPosition();
    }

    public Position toValue(String value) {
        for(Position position : positionList) {
            if(position.getPosition().equals(value)) {
                return position;
            }
        }
        return null;
    }
}